Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effect of Various Plasticizers and Ferulic Acid on the Physical Properties of Gelidium corneum Film

다양한 가소제와 Ferulic Acid 처리한 Gelidium corneum 필름의 물성

  • Lim, Geum-Ok (Dept. of Food Science and Technology, Chungnam National University) ;
  • Hong, Yun-Hee (Dept. of Food Science and Technology, Chungnam National University) ;
  • Song, Kyung-Bin (Dept. of Food Science and Technology, Chungnam National University)
  • Published : 2009.06.30
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Abstract

Effects of various plasticizers (1.5%) such as glycerol, sorbitol, fructose, sucrose, and polypropylene glycol, and ferulic acid on the physical properties of Gelidium corneum (GC) film were examined. GC films containing plasticizer and ferulic acid were prepared by incorporating various amounts (10, 30, 50, 70, 100 mg/100 mL) of ferulic acid into the film. Water vapor permeability (WVP) of the GC film varied depending on the type of plasticizer, and among them the film containing sucrose had the lowest WVP. Tensile strength (TS) and % elongation (%E) of the film were in the range of $1.29{\sim}11.29$ MPa and $5.55{\sim}36.44$ %, respectively, and the WVP values were of $1.30{\sim}1.60\;ng\;m/m^{2}sPa$. In addition, the GC films were prepared using ferulic acid as a cross-linking agent. WVP of the film decreased with the addition of ferulic acid, and the film containing 30 mg ferulic acid had the lowest WVP value. TS value of the GC film containing 10 mg of ferulic acid was significantly higher than that of the control. However, further increase of ferulic acid concentration decreased the TS value. Therefore, 10 mg of ferulic acid was determined to be the optimal concentration for the film.

다양한 가소제와 ferulic acid를 첨가한 GC 필름의 물성을 측정하였다. Glycerol, sorbitol, fructose, sucrose, PPG를 첨가한 필름의 WVP는 $1.30{\sim}1.60\;ng\;m/m^{2}sPa$ 범위를 나타내었는데, 가소제의 종류에 따라 값의 차이를 나타내었으며 sucrose를 첨가한 필름이 가장 낮은 WVP를 나타내었다. 필름의 TS와 %E는 각각 $1.29{\sim}11.29$ MPa, $5.55{\sim}36.44$%의 범위를 나타내었다. GC 필름에 가교제인 ferulic acid를 첨가하여 필름의 물성을 측정하였을 경우 WVP가 개선됨을 확인할 수 있었는데, 30 mg ferulic acid 첨가 시 가장 낮은 WVP를 나타내었다. 10 mg ferulic acid를 필름에 첨가하였을 때 대조구에 비해 매우 높은 TS를 나타내었지만 ferulic acid의 첨가량이 그 이상 증가함에 따라 TS는 감소하는 경향을 나타내어 ferulic acid를 10 mg 첨가하는 것이 가장 최적의 농도라고 판단된다.

Keywords

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